PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-15:42:40
G01     225.2          16.5                8.3 +/-    2.17      19.8 +/-    2.17  0.130 / 0.250
G03     277.5          71.1                8.6 +/-    0.92       9.0 +/-    0.92  0.400 / 0.330
G14     87.5           22.8                6.7 +/-    1.36      13.9 +/-    1.36  0.110 / 0.230
G16     152.4          42.6                9.9 +/-    1.43      13.9 +/-    1.43  0.100 / 0.190
G22     204.9          68.1                8.9 +/-    0.32       9.5 +/-    0.32  0.030 / 0.030
G23     307.5          37.2                7.4 +/-    1.14      11.3 +/-    1.14  0.030 / 0.030
G26     103.2          55.4                8.2 +/-    0.73       9.8 +/-    0.73  0.040 / 0.030
G31     45.1           33.3                6.7 +/-    1.60      11.0 +/-    1.60  0.040 / 0.030