PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-00:12:50
G07     337.1          59.4                5.8 +/-    0.56       6.7 +/-    0.56  0.090 / 0.150
G08     95.9           52.7                7.5 +/-    0.52       9.1 +/-    0.52  0.100 / 0.150
G09     190.6          71.5                9.4 +/-    0.80       9.8 +/-    0.80  0.030 / 0.040
G11     145.4          14.2                8.5 +/-    1.46      21.5 +/-    1.46  0.030 / 0.040
G23     156.3          38.3                9.6 +/-    0.55      14.4 +/-    0.55  0.030 / 0.040
G27     51.8           29.4                6.2 +/-    1.42      11.0 +/-    1.42  0.030 / 0.040
G28     240.0          32.5                8.4 +/-    1.64      14.0 +/-    1.64  0.050 / 0.070
G30     306.4          39.9                6.4 +/-    1.64       9.3 +/-    1.64  0.040 / 0.080