PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-22:43:00
G01     63.9           31.7               11.6 +/-    1.27      19.7 +/-    1.27  0.140 / 0.260
G07     140.7          26.0               14.3 +/-    1.25      27.4 +/-    1.25  0.130 / 0.230
G11     51.1           28.1                9.6 +/-    2.06      17.5 +/-    2.06  0.060 / 0.090
G13     267.4          36.2               15.1 +/-    1.61      23.4 +/-    1.61  0.080 / 0.100
G15     296.8          16.4               11.7 +/-    1.43      28.1 +/-    1.43  0.040 / 0.040
G17     243.1          69.9               14.4 +/-    0.52      15.2 +/-    0.52  0.040 / 0.040
G18     45.0           15.4               10.4 +/-    2.47      25.6 +/-    2.47  0.090 / 0.320
G19     229.3          47.0               15.9 +/-    2.49      20.9 +/-    2.49  0.180 / 0.350
G28     30.8           57.5               13.6 +/-    0.68      15.8 +/-    0.68  0.060 / 0.110
G30     140.7          53.4               14.1 +/-    0.49      17.1 +/-    0.49  0.050 / 0.120