PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/13-12:57:40
G02     58.8           32.3                1.4 +/-    1.61       2.4 +/-    1.61  0.040 / 0.030
G05     64.2           65.9                3.4 +/-    0.36       3.6 +/-    0.36  0.030 / 0.020
G12     181.7          32.1                9.0 +/-    1.09      15.2 +/-    1.09  0.070 / 0.090
G13     127.9          13.7                6.9 +/-    1.96      17.8 +/-    1.96  0.090 / 0.080
G15     162.8          12.4                4.2 +/-    8.33      11.1 +/-    8.33  0.030 / 0.040
G21     270.4          16.1                7.3 +/-    2.03      17.7 +/-    2.03  0.040 / 0.040
G25     239.7          53.3                8.2 +/-    4.70      10.0 +/-    4.70  0.150 / 0.320
G29     326.8          51.8                3.5 +/-    0.87       4.4 +/-    0.87  0.140 / 0.340