PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-18:58:00
G01     111.7          22.3               13.4 +/-    1.15      27.8 +/-    1.15  0.050 / 0.060
G07     103.1          56.0               11.5 +/-    0.47      13.6 +/-    0.47  0.040 / 0.060
G08     42.5           24.3                8.8 +/-    1.03      17.5 +/-    1.03  0.030 / 0.040
G09     176.5          19.8               13.5 +/-    1.02      29.9 +/-    1.02  0.040 / 0.050
G11     94.7           42.6               12.9 +/-    0.73      18.0 +/-    0.73  0.030 / 0.040
G13     313.1          25.9               10.5 +/-    1.41      20.1 +/-    1.41  0.030 / 0.040
G17     203.0          32.8               13.1 +/-    1.87      21.7 +/-    1.87  0.100 / 0.230
G18     83.8           22.8               10.1 +/-    0.76      20.8 +/-    0.76  0.090 / 0.220
G28     299.2          57.5               11.2 +/-    0.33      13.0 +/-    0.33  0.080 / 0.230
G30     10.0           75.6               12.1 +/-    0.56      12.4 +/-    0.56  0.080 / 0.220