PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-03:13:00
G01     129.6          9.6               -17.5 +/-   15.60     -49.4 +/-   15.60  0.130 / 0.120
G07     43.0           69.5                5.1 +/-    0.63       5.4 +/-    0.63  0.130 / 0.130
G08     53.4           42.3                4.4 +/-    0.97       6.1 +/-    0.97  0.110 / 0.300
G09     179.1          40.4                9.0 +/-    1.03      13.0 +/-    1.03  0.140 / 0.420
G11     122.8          32.5                7.1 +/-    1.61      11.8 +/-    1.61  0.050 / 0.040
G17     199.5          12.2                2.8 +/-    9.67       7.6 +/-    9.67  0.060 / 0.050
G23     160.7          11.2                7.2 +/-    2.67      19.6 +/-    2.67  0.080 / 0.060
G28     272.1          51.6                4.6 +/-    2.79       5.6 +/-    2.79  0.080 / 0.080
G30     332.1          59.4                3.4 +/-    0.45       3.9 +/-    0.45  0.170 / 0.290