PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/28-07:27:50
G01     63.1           31.4                4.8 +/-    1.16       8.2 +/-    1.16  0.040 / 0.050
G07     140.9          24.1                6.8 +/-    1.51      13.6 +/-    1.51  0.040 / 0.040
G11     49.8           25.6                4.2 +/-    2.27       8.2 +/-    2.27  0.070 / 0.160
G13     267.8          35.8                6.5 +/-    1.76      10.1 +/-    1.76  0.070 / 0.130
G15     296.2          16.5                2.7 +/-    1.36       6.5 +/-    1.36  0.090 / 0.170
G17     252.4          75.9                7.4 +/-    0.35       7.6 +/-    0.35  0.110 / 0.250
G19     230.3          49.7                7.0 +/-    2.59       8.8 +/-    2.59  0.020 / 0.020
G28     32.3           57.2                4.7 +/-    0.78       5.4 +/-    0.78  0.030 / 0.020
G30     141.1          54.2                8.3 +/-    0.36      10.0 +/-    0.36  0.070 / 0.080