PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-10:27:50
G01     65.1           31.8                5.3 +/-    0.67       8.9 +/-    0.67  0.040 / 0.110
G07     139.9          25.0                7.3 +/-    1.25      14.2 +/-    1.25  0.050 / 0.110
G11     50.3           25.9                4.1 +/-    0.62       7.8 +/-    0.62  0.040 / 0.050
G13     270.6          36.1                8.5 +/-    1.19      13.3 +/-    1.19  0.040 / 0.070
G15     298.8          16.0                5.9 +/-    2.24      14.4 +/-    2.24  0.090 / 0.400
G17     247.6          75.4                9.0 +/-    0.39       9.3 +/-    0.39  0.100 / 0.320
G19     228.5          48.3                8.3 +/-    0.81      10.7 +/-    0.81  0.040 / 0.030
G28     28.9           57.7                4.3 +/-    0.59       5.0 +/-    0.59  0.020 / 0.040
G30     139.6          57.7                9.3 +/-    0.76      10.7 +/-    0.76  0.060 / 0.080