PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-12:57:50
G10     299.4          52.2                2.8 +/-    1.32       3.4 +/-    1.32  0.090 / 0.080
G14     211.0          12.2                0.8 +/-   10.56       2.1 +/-   10.56  0.080 / 0.080
G15     45.7           25.2                4.0 +/-    1.70       7.8 +/-    1.70  0.080 / 0.170
G20     70.7           21.6                3.5 +/-    0.90       7.4 +/-    0.90  0.090 / 0.170
G21     105.4          70.6                5.0 +/-    0.95       5.3 +/-    0.95  0.030 / 0.030
G24     96.5           27.2                3.9 +/-    1.45       7.3 +/-    1.45  0.030 / 0.040
G27     297.4          35.5                3.9 +/-    2.03       6.2 +/-    2.03  0.120 / 0.420
G32     211.4          34.3                5.4 +/-    1.73       8.7 +/-    1.73  0.120 / 0.360