PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-11:12:30
G10     254.9          29.6                5.2 +/-    0.90       9.3 +/-    0.90  0.080 / 0.070
G13     49.9           27.7                1.5 +/-    0.95       2.8 +/-    0.95  0.060 / 0.080
G15     74.6           54.8                6.2 +/-    0.72       7.3 +/-    0.72  0.070 / 0.060
G16     292.3          14.4                4.3 +/-    1.89      10.9 +/-    1.89  0.060 / 0.050
G20     42.0           49.8                3.0 +/-    0.61       3.8 +/-    0.61  0.090 / 0.270
G21     344.3          65.2                0.5 +/-    1.12       0.5 +/-    1.12  0.090 / 0.310
G26     263.4          13.5                5.0 +/-    1.00      12.9 +/-    1.00  0.080 / 0.120
G29     165.3          42.7                5.6 +/-    1.28       7.8 +/-    1.28  0.090 / 0.120