PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-14:28:00
G01     70.6           32.4                8.7 +/-    1.56      14.5 +/-    1.56  0.130 / 0.120
G07     136.6          28.0                9.9 +/-    1.54      18.0 +/-    1.54  0.090 / 0.080
G11     53.8           31.8                7.0 +/-    1.65      11.9 +/-    1.65  0.050 / 0.050
G13     274.2          38.6                9.2 +/-    1.54      13.6 +/-    1.54  0.040 / 0.050
G15     303.0          15.1                5.7 +/-    1.58      14.1 +/-    1.58  0.070 / 0.100
G17     229.5          65.3               11.4 +/-    0.92      12.4 +/-    0.92  0.080 / 0.110
G18     48.6           18.0                1.6 +/-   14.89       3.8 +/-   14.89  0.040 / 0.040
G19     222.7          42.7               10.5 +/-    1.88      14.6 +/-    1.88  0.050 / 0.040
G28     6.0            61.1                9.2 +/-    0.86      10.3 +/-    0.86  0.090 / 0.110
G30     135.0          61.2               10.4 +/-    0.46      11.6 +/-    0.46  0.060 / 0.110