PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-05:12:40
G01     78.8           33.2                4.3 +/-    0.97       7.0 +/-    0.97  0.040 / 0.040
G07     133.1          36.7                8.4 +/-    0.80      12.9 +/-    0.80  0.050 / 0.050
G11     59.8           35.3                5.0 +/-    0.86       7.9 +/-    0.86  0.040 / 0.030
G13     284.4          37.1                4.4 +/-    1.06       6.7 +/-    1.06  0.040 / 0.040
G15     307.7          14.1                1.8 +/-    2.57       4.6 +/-    2.57  0.090 / 0.160
G17     223.8          63.6                5.4 +/-    1.07       6.0 +/-    1.07  0.110 / 0.210
G19     219.7          37.0                5.4 +/-    1.99       8.3 +/-    1.99  0.050 / 0.090
G28     8.9            60.4                3.8 +/-    1.46       4.3 +/-    1.46  0.040 / 0.090
G30     126.8          66.0                7.0 +/-    0.63       7.5 +/-    0.63  0.070 / 0.110