PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-23:58:10
G01     102.6          27.8                9.1 +/-    0.84      16.7 +/-    0.84  0.040 / 0.040
G07     113.0          55.1                9.8 +/-    0.42      11.7 +/-    0.42  0.040 / 0.040
G08     42.0           19.1                6.2 +/-    1.27      13.8 +/-    1.27  0.060 / 0.120
G09     174.7          10.7               12.9 +/-    2.88      35.4 +/-    2.88  0.070 / 0.130
G11     86.9           43.8                9.2 +/-    1.27      12.6 +/-    1.27  0.070 / 0.080
G13     306.5          30.6                8.5 +/-    0.98      14.7 +/-    0.98  0.040 / 0.060
G17     208.5          40.4               11.6 +/-    0.85      16.8 +/-    0.85  0.130 / 0.250
G19     210.4          17.1               12.0 +/-    2.56      28.3 +/-    2.56  0.080 / 0.110
G28     328.2          61.7                7.3 +/-    0.61       8.1 +/-    0.61  0.040 / 0.060
G30     67.4           78.0                9.7 +/-    1.46       9.9 +/-    1.46  0.050 / 0.060