PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-12:12:40
G08     315.5          16.0                2.1 +/-    2.11       5.1 +/-    2.11  0.030 / 0.020
G10     317.0          57.4                3.5 +/-    1.10       4.0 +/-    1.10  0.030 / 0.030
G14     213.5          23.2                4.7 +/-    1.76       9.5 +/-    1.76  0.060 / 0.090
G15     45.7           17.5                3.1 +/-    2.99       7.3 +/-    2.99  0.100 / 0.100
G20     20.0           63.3                4.9 +/-    0.83       5.4 +/-    0.83  0.030 / 0.040
G21     124.8          60.0                6.5 +/-    0.39       7.3 +/-    0.39  0.030 / 0.040
G24     81.6           28.8                5.3 +/-    1.28       9.6 +/-    1.28  0.040 / 0.090
G27     289.5          36.4                6.6 +/-    1.69      10.2 +/-    1.69  0.060 / 0.080
G32     216.7          40.4                6.0 +/-    1.65       8.6 +/-    1.65  0.220 / 0.300