PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-17:27:50
G01     42.0           17.6                8.2 +/-    3.07      19.0 +/-    3.07  0.070 / 0.180
G06     173.9          38.7               11.6 +/-    1.43      17.3 +/-    1.43  0.070 / 0.180
G13     239.0          23.1               13.6 +/-    1.66      27.7 +/-    1.66  0.070 / 0.070
G15     274.5          12.5               11.1 +/-    1.02      29.4 +/-    1.02  0.070 / 0.070
G17     355.7          72.1               10.6 +/-    0.81      11.1 +/-    0.81  0.130 / 0.250
G19     268.1          65.9               11.4 +/-    0.68      12.3 +/-    0.68  0.200 / 0.240
G24     316.7          18.8                8.9 +/-    2.01      20.1 +/-    2.01  0.030 / 0.020
G28     69.4           47.7               10.3 +/-    1.68      13.4 +/-    1.68  0.030 / 0.030
G30     154.3          29.7               11.5 +/-    1.10      20.3 +/-    1.10  0.050 / 0.040