PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-00:42:50
G01     84.9           32.5                4.9 +/-    1.09       8.2 +/-    1.09  0.050 / 0.040
G07     129.5          37.9                7.6 +/-    0.80      11.5 +/-    0.80  0.040 / 0.040
G11     62.2           37.0                5.7 +/-    1.49       8.8 +/-    1.49  0.120 / 0.190
G13     289.0          37.7                6.5 +/-    1.35       9.8 +/-    1.35  0.090 / 0.180
G15     312.3          11.7                4.7 +/-    1.86      12.6 +/-    1.86  0.040 / 0.060
G17     217.0          60.3                7.4 +/-    1.26       8.4 +/-    1.26  0.040 / 0.070
G18     55.9           20.6                5.4 +/-    2.60      11.6 +/-    2.60  0.090 / 0.070
G19     216.3          30.1                8.2 +/-    2.30      14.4 +/-    2.30  0.080 / 0.090
G28     350.6          61.7                5.2 +/-    0.39       5.8 +/-    0.39  0.110 / 0.110
G30     116.3          73.3                8.0 +/-    0.76       8.3 +/-    0.76  0.170 / 0.200