PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-13:58:10
G01     220.4          11.9                6.9 +/-    2.94      18.5 +/-    2.94  0.150 / 0.290
G03     247.9          72.3                8.7 +/-    0.40       9.0 +/-    0.40  0.140 / 0.310
G09     298.0          11.3               -8.5 +/-   27.47     -23.0 +/-   27.47  0.040 / 0.030
G14     93.0           18.9                8.7 +/-    1.47      19.8 +/-    1.47  0.040 / 0.030
G16     144.5          50.0                9.7 +/-    0.99      12.3 +/-    0.99  0.100 / 0.230
G22     193.3          60.1                9.9 +/-    0.42      11.2 +/-    0.42  0.130 / 0.240
G23     313.0          42.8                7.4 +/-    0.93      10.2 +/-    0.93  0.150 / 0.270
G26     87.8           55.6                8.7 +/-    1.05      10.3 +/-    1.05  0.170 / 0.250
G31     48.2           26.7                6.0 +/-    2.67      11.3 +/-    2.67  0.040 / 0.040