PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-11:28:00
G01     74.7           32.5                3.8 +/-    0.54       6.4 +/-    0.54  0.060 / 0.090
G07     134.3          32.7                6.3 +/-    0.75      10.4 +/-    0.75  0.040 / 0.080
G11     57.2           35.1                2.9 +/-    0.57       4.6 +/-    0.57  0.240 / 0.210
G13     279.0          38.9                5.0 +/-    1.73       7.5 +/-    1.73  0.060 / 0.080
G15     307.1          13.6                2.4 +/-    0.97       6.3 +/-    0.97  0.040 / 0.050
G17     224.4          61.6                6.3 +/-    0.78       7.1 +/-    0.78  0.050 / 0.070
G18     51.9           20.0                2.3 +/-    1.18       5.1 +/-    1.18  0.100 / 0.270
G19     220.0          39.7                7.0 +/-    1.62      10.3 +/-    1.62  0.090 / 0.230
G28     357.0          61.5                3.7 +/-    0.80       4.2 +/-    0.80  0.070 / 0.120
G30     130.3          67.0                5.6 +/-    0.80       6.0 +/-    0.80  0.050 / 0.110