PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-15:27:40
G02     25.9           61.7               10.2 +/-    0.48      11.4 +/-    0.48  0.030 / 0.050
G05     154.7          53.3               13.9 +/-    1.23      16.8 +/-    1.23  0.040 / 0.050
G06     49.3           23.8                8.3 +/-    1.14      16.6 +/-    1.14  0.150 / 0.360
G12     219.9          75.8                9.7 +/-    0.82      10.0 +/-    0.82  0.130 / 0.430
G19     94.7           13.0               13.2 +/-    1.11      34.4 +/-    1.11  0.030 / 0.030
G20     198.0          18.4               15.8 +/-    3.01      36.2 +/-    3.01  0.030 / 0.030
G25     305.1          49.8                9.3 +/-    1.24      11.8 +/-    1.24  0.050 / 0.060
G29     304.3          26.9                6.8 +/-    1.54      12.7 +/-    1.54  0.040 / 0.060