PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-15:12:50
G01     66.0           32.2                8.0 +/-    0.67      13.4 +/-    0.67  0.040 / 0.050
G07     139.7          27.3               11.5 +/-    1.57      21.3 +/-    1.57  0.040 / 0.040
G11     50.7           27.2                5.8 +/-    1.48      10.8 +/-    1.48  0.060 / 0.090
G13     269.0          36.9                9.0 +/-    1.19      13.8 +/-    1.19  0.070 / 0.080
G15     301.3          14.7                5.1 +/-    2.08      12.9 +/-    2.08  0.040 / 0.060
G17     242.4          72.8               10.8 +/-    0.71      11.3 +/-    0.71  0.040 / 0.060
G18     45.7           15.8                6.2 +/-    1.78      15.1 +/-    1.78  0.120 / 0.200
G19     227.2          42.7               12.4 +/-    0.96      17.2 +/-    0.96  0.080 / 0.180
G28     26.5           58.3                8.2 +/-    0.71       9.4 +/-    0.71  0.050 / 0.130
G30     139.7          58.8                9.6 +/-    0.82      11.1 +/-    0.82  0.070 / 0.110