PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-14:27:40
G01     38.0           10.6                8.5 +/-    2.20      23.3 +/-    2.20  0.220 / 0.340
G02     200.8          12.5                8.9 +/-   11.00      23.5 +/-   11.00  0.240 / 0.300
G06     170.3          49.3                8.4 +/-    0.88      10.7 +/-    0.88  0.110 / 0.160
G13     231.2          17.0               10.0 +/-    2.93      23.7 +/-    2.93  0.070 / 0.130
G17     17.3           63.2                7.0 +/-    0.76       7.8 +/-    0.76  0.060 / 0.070
G19     291.4          69.3                7.1 +/-    0.67       7.5 +/-    0.67  0.050 / 0.090
G24     312.6          26.8                7.5 +/-    2.02      14.0 +/-    2.02  0.090 / 0.150
G28     80.8           43.1                7.7 +/-    0.67      10.6 +/-    0.67  0.070 / 0.140
G30     156.9          21.8               10.1 +/-    1.21      21.2 +/-    1.21  0.050 / 0.060