PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-14:58:00
G01     105.0          26.6                9.6 +/-    1.15      18.2 +/-    1.15  0.090 / 0.160
G07     109.9          56.8               11.6 +/-    0.38      13.5 +/-    0.38  0.080 / 0.130
G08     41.7           18.5                8.1 +/-    1.77      18.5 +/-    1.77  0.020 / 0.020
G09     173.6          10.7               10.0 +/-    7.26      27.5 +/-    7.26  0.020 / 0.020
G11     85.7           42.7               10.2 +/-    0.95      14.2 +/-    0.95  0.030 / 0.040
G13     307.9          30.0               10.4 +/-    1.39      18.2 +/-    1.39  0.040 / 0.040
G17     206.8          39.4               12.8 +/-    1.07      18.8 +/-    1.07  0.070 / 0.140
G18     77.9           24.5               10.6 +/-    1.09      21.0 +/-    1.09  0.090 / 0.150
G28     321.9          61.3                9.7 +/-    0.81      10.9 +/-    0.81  0.080 / 0.120
G30     30.2           79.0               10.9 +/-    0.94      11.1 +/-    0.94  0.070 / 0.120