PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-15:27:40
G07     335.8          59.4               11.0 +/-    0.58      12.6 +/-    0.58  0.170 / 0.360
G08     107.0          50.1               12.4 +/-    0.64      15.6 +/-    0.64  0.310 / 0.250
G09     209.0          79.4               12.5 +/-    0.33      12.7 +/-    0.33  0.040 / 0.040
G11     147.9          11.1               15.3 +/-   15.76      41.7 +/-   15.76  0.030 / 0.040
G16     45.2           12.9                8.1 +/-    2.61      21.3 +/-    2.61  0.290 / 0.690
G23     153.4          45.9               14.0 +/-    0.89      18.6 +/-    0.89  0.310 / 0.580
G27     61.4           34.8               10.6 +/-    1.36      16.9 +/-    1.36  0.050 / 0.070
G28     232.5          21.1               14.1 +/-    1.98      30.2 +/-    1.98  0.060 / 0.060
G30     299.5          34.2                9.5 +/-    2.00      15.3 +/-    2.00  0.030 / 0.020