PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-05:28:10
G02     60.3           31.4                2.1 +/-    1.57       3.5 +/-    1.57  0.090 / 0.280
G05     56.8           59.9                4.0 +/-    0.83       4.6 +/-    0.83  0.080 / 0.190
G12     186.2          34.6                6.5 +/-    0.77      10.5 +/-    0.77  0.160 / 0.350
G13     127.1          15.2                7.4 +/-    1.77      18.4 +/-    1.77  0.160 / 0.390
G15     162.9          13.0                5.8 +/-    4.28      15.0 +/-    4.28  0.080 / 0.090
G21     273.1          20.2                4.1 +/-    2.22       8.9 +/-    2.22  0.070 / 0.090
G25     232.9          51.5                5.9 +/-    2.12       7.3 +/-    2.12  0.030 / 0.030
G29     334.7          60.2                3.5 +/-    0.68       3.9 +/-    0.68  0.030 / 0.030