PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-01:58:10
G01     51.2           26.2                3.8 +/-    2.42       7.3 +/-    2.42  0.040 / 0.050
G06     179.4          22.5                7.7 +/-    2.39      15.9 +/-    2.39  0.030 / 0.050
G07     146.0          13.8                7.2 +/-    2.10      18.3 +/-    2.10  0.170 / 0.130
G11     45.8           18.6                3.5 +/-    3.48       8.1 +/-    3.48  0.170 / 0.150
G13     252.6          30.9                6.2 +/-    3.82      10.6 +/-    3.82  0.110 / 0.200
G15     284.1          16.2                6.9 +/-    1.27      16.8 +/-    1.27  0.120 / 0.210
G17     298.6          78.1                7.1 +/-    0.63       7.2 +/-    0.63  0.030 / 0.020
G19     245.3          59.3                5.5 +/-    0.98       6.3 +/-    0.98  0.020 / 0.020
G28     51.6           53.0                5.5 +/-    1.05       6.7 +/-    1.05  0.070 / 0.110
G30     148.1          38.6                8.5 +/-    0.67      12.7 +/-    0.67  0.080 / 0.110