PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-21:42:30
G02     21.5           64.3                9.0 +/-    0.50       9.9 +/-    0.50  0.030 / 0.020
G05     151.5          53.1               10.9 +/-    0.54      13.3 +/-    0.54  0.030 / 0.020
G06     49.1           22.3                7.1 +/-    1.47      14.8 +/-    1.47  0.040 / 0.040
G12     212.5          76.7                8.6 +/-    0.49       8.9 +/-    0.49  0.040 / 0.040
G19     90.8           17.9                8.2 +/-    1.95      19.1 +/-    1.95  0.150 / 0.170
G25     308.5          46.0                9.1 +/-    1.25      12.2 +/-    1.25  0.090 / 0.180
G29     299.6          19.7                8.6 +/-    1.01      18.9 +/-    1.01  0.120 / 0.170