PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-20:28:10
G01     40.9           16.0                8.9 +/-    1.19      21.7 +/-    1.19  0.080 / 0.130
G06     173.9          40.7               14.2 +/-    1.05      20.4 +/-    1.05  0.060 / 0.120
G13     237.3          21.6               15.5 +/-    1.71      32.9 +/-    1.71  0.140 / 0.330
G15     271.0          12.0               12.6 +/-    1.79      33.7 +/-    1.79  0.120 / 0.310
G17     354.8          71.5               12.1 +/-    0.60      12.7 +/-    0.60  0.140 / 0.350
G19     276.1          68.0               11.5 +/-    0.57      12.3 +/-    0.57  0.130 / 0.350
G24     316.2          20.1                9.9 +/-    1.78      21.7 +/-    1.78  0.050 / 0.050
G28     72.7           46.4                9.9 +/-    1.23      13.1 +/-    1.23  0.040 / 0.040
G30     154.6          26.3               14.9 +/-    2.47      28.3 +/-    2.47  0.050 / 0.080