PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-13:27:40
G08     311.1          17.5                2.8 +/-    1.23       6.6 +/-    1.23  0.060 / 0.090
G10     331.7          59.9                3.1 +/-    0.67       3.5 +/-    0.67  0.060 / 0.080
G14     218.6          29.7                4.0 +/-    2.99       7.1 +/-    2.99  0.030 / 0.060
G21     134.6          54.2                5.2 +/-    0.51       6.3 +/-    0.51  0.030 / 0.050
G24     74.3           30.3                4.2 +/-    0.41       7.3 +/-    0.41  0.080 / 0.170
G27     273.1          37.5                5.2 +/-    0.95       7.9 +/-    0.95  0.070 / 0.170
G32     223.8          53.3                5.4 +/-    1.28       6.6 +/-    1.28  0.050 / 0.070