PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-14:27:40
G01     126.9          11.8               10.5 +/-    3.25      28.3 +/-    3.25  0.060 / 0.070
G07     52.9           69.6                9.7 +/-    0.49      10.3 +/-    0.49  0.050 / 0.070
G08     50.4           39.6                8.8 +/-    0.56      12.9 +/-    0.56  0.030 / 0.060
G09     177.2          34.8               11.2 +/-    0.62      17.9 +/-    0.62  0.030 / 0.040
G11     117.9          35.4               10.4 +/-    0.60      16.4 +/-    0.60  0.120 / 0.330
G13     321.1          11.9                5.6 +/-   15.43      15.1 +/-   15.43  0.110 / 0.430
G17     200.2          14.4                8.5 +/-    3.05      21.6 +/-    3.05  0.030 / 0.040
G18     103.5          16.7                9.9 +/-    1.10      23.5 +/-    1.10  0.040 / 0.030
G28     276.5          53.0               10.9 +/-    0.95      13.2 +/-    0.95  0.050 / 0.130
G30     332.6          60.4                9.1 +/-    0.63      10.3 +/-    0.63  0.050 / 0.120