PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-13:58:10
G01     42.1           17.4                6.1 +/-    0.69      14.2 +/-    0.69  0.050 / 0.120
G06     175.9          36.8               12.5 +/-    0.91      19.2 +/-    0.91  0.050 / 0.100
G15     274.3          13.0                7.1 +/-    1.41      18.4 +/-    1.41  0.180 / 0.380
G17     4.9            70.2                8.3 +/-    0.56       8.8 +/-    0.56  0.200 / 0.400
G19     276.9          69.9                7.5 +/-    0.88       8.0 +/-    0.88  0.060 / 0.090
G24     317.8          16.3                5.3 +/-    3.32      12.7 +/-    3.32  0.080 / 0.090
G28     69.8           47.4                6.3 +/-    0.46       8.2 +/-    0.46  0.030 / 0.030
G30     154.3          30.8                9.9 +/-    0.61      17.1 +/-    0.61  0.030 / 0.040