PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-17:28:00
G08     298.0          22.2                8.5 +/-    1.49      17.8 +/-    1.49  0.090 / 0.090
G10     356.7          62.6                9.7 +/-    0.80      10.8 +/-    0.80  0.080 / 0.080
G14     226.6          42.6               14.0 +/-    1.74      19.6 +/-    1.74  0.070 / 0.080
G18     60.1           51.9               12.0 +/-    0.89      14.8 +/-    0.89  0.060 / 0.090
G21     143.2          39.4               14.6 +/-    1.05      21.5 +/-    1.05  0.090 / 0.120
G24     61.1           28.0               11.4 +/-    2.24      20.9 +/-    2.24  0.080 / 0.130
G27     257.6          33.5               11.6 +/-    2.05      19.0 +/-    2.05  0.030 / 0.020
G32     238.4          63.5               13.3 +/-    1.14      14.7 +/-    1.14  0.030 / 0.030