PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-15:43:10
G01     60.6           30.7                9.2 +/-    1.02      15.8 +/-    1.02  0.040 / 0.040
G07     142.1          22.8               11.3 +/-    2.23      23.3 +/-    2.23  0.040 / 0.040
G11     48.2           23.6                8.0 +/-    2.01      16.1 +/-    2.01  0.090 / 0.150
G13     262.9          35.5               12.0 +/-    1.17      18.9 +/-    1.17  0.090 / 0.120
G15     296.7          15.3                5.5 +/-    2.49      13.6 +/-    2.49  0.080 / 0.130
G17     257.3          76.0               11.7 +/-    0.44      12.0 +/-    0.44  0.090 / 0.110
G18     42.5           13.0                6.5 +/-    1.91      16.8 +/-    1.91  0.170 / 0.320
G19     231.5          47.3               11.5 +/-    2.51      15.1 +/-    2.51  0.090 / 0.160
G28     34.8           56.9               11.1 +/-    1.19      12.9 +/-    1.19  0.050 / 0.080
G30     143.6          53.7               10.4 +/-    0.52      12.6 +/-    0.52  0.050 / 0.090