PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-18:42:50
G01     105.0          26.7               12.6 +/-    0.77      23.6 +/-    0.77  0.070 / 0.150
G07     109.7          57.1               12.6 +/-    0.41      14.7 +/-    0.41  0.070 / 0.160
G08     42.1           20.8                8.1 +/-    1.22      17.5 +/-    1.22  0.030 / 0.040
G09     174.6          12.0               13.0 +/-    1.48      34.8 +/-    1.48  0.040 / 0.030
G11     87.4           43.1               11.1 +/-    0.38      15.4 +/-    0.38  0.040 / 0.060
G13     308.1          29.7               11.2 +/-    1.71      19.7 +/-    1.71  0.040 / 0.060
G17     207.6          36.8               13.7 +/-    1.10      21.1 +/-    1.10  0.040 / 0.080
G18     78.5           24.6               11.2 +/-    0.85      22.1 +/-    0.85  0.050 / 0.090
G28     322.6          61.3               10.5 +/-    1.01      11.8 +/-    1.01  0.030 / 0.040
G30     39.0           79.0               11.3 +/-    0.72      11.5 +/-    0.72  0.030 / 0.050