PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-15:12:50
G01     99.7           28.9                9.2 +/-    0.95      16.4 +/-    0.95  0.030 / 0.030
G07     116.6          52.8               10.8 +/-    0.46      13.2 +/-    0.46  0.040 / 0.030
G08     41.7           14.3                7.1 +/-    1.64      18.0 +/-    1.64  0.060 / 0.140
G11     78.8           42.1               10.0 +/-    1.01      14.1 +/-    1.01  0.060 / 0.130
G13     303.3          32.7               10.3 +/-    1.31      17.1 +/-    1.31  0.040 / 0.080
G17     209.3          44.5               11.1 +/-    0.66      15.1 +/-    0.66  0.040 / 0.080
G18     72.5           24.7                9.7 +/-    0.61      19.1 +/-    0.61  0.030 / 0.050
G19     211.6          17.0               10.3 +/-    3.50      24.4 +/-    3.50  0.020 / 0.060
G28     332.1          61.8                8.8 +/-    0.43       9.8 +/-    0.43  0.040 / 0.060
G30     59.8           80.0                9.9 +/-    0.63      10.1 +/-    0.63  0.040 / 0.060