PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-03:13:00
G01     61.8           31.1                3.8 +/-    1.03       6.5 +/-    1.03  0.060 / 0.070
G06     182.5          11.4               -6.9 +/-   30.53     -18.6 +/-   30.53  0.050 / 0.050
G07     141.6          23.8                4.9 +/-    2.39       9.7 +/-    2.39  0.060 / 0.060
G11     50.1           26.6                1.8 +/-    2.13       3.4 +/-    2.13  0.070 / 0.070
G13     265.6          35.5                6.1 +/-    1.88       9.6 +/-    1.88  0.120 / 0.120
G15     294.6          16.8                2.6 +/-    1.07       6.3 +/-    1.07  0.080 / 0.120
G17     252.6          74.7                5.9 +/-    0.34       6.1 +/-    0.34  0.030 / 0.030
G19     231.4          50.0                6.0 +/-    2.60       7.5 +/-    2.60  0.020 / 0.030
G28     34.3           56.8                4.3 +/-    1.17       5.0 +/-    1.17  0.090 / 0.180
G30     141.7          50.0                6.1 +/-    0.46       7.7 +/-    0.46  0.110 / 0.130