PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-11:57:40
G02     23.4           62.6                3.0 +/-    0.83       3.3 +/-    0.83  0.030 / 0.030
G05     154.4          53.3                5.8 +/-    0.50       7.1 +/-    0.50  0.030 / 0.030
G06     49.3           22.6                1.7 +/-    1.10       3.5 +/-    1.10  0.040 / 0.060
G12     215.2          76.0                4.0 +/-    0.64       4.1 +/-    0.64  0.040 / 0.040
G19     92.3           16.8                4.7 +/-    2.19      11.3 +/-    2.19  0.040 / 0.040
G25     303.0          52.5                3.4 +/-    1.69       4.1 +/-    1.69  0.030 / 0.050
G29     301.9          22.9                4.1 +/-    1.81       8.5 +/-    1.81  0.110 / 0.110