PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-01:42:40
G02     356.2          76.7                7.3 +/-    0.44       7.5 +/-    0.44  0.030 / 0.040
G05     162.0          36.5               14.9 +/-    1.65      23.1 +/-    1.65  0.040 / 0.040
G06     42.2           38.3                6.2 +/-    1.20       9.2 +/-    1.20  0.040 / 0.070
G12     307.9          72.9                8.5 +/-    0.60       8.9 +/-    0.60  0.030 / 0.070
G17     86.1           13.9                9.5 +/-    1.10      24.3 +/-    1.10  0.150 / 0.160
G19     76.4           26.9                9.0 +/-    0.95      16.9 +/-    0.95  0.080 / 0.150
G24     226.9          21.4               14.2 +/-    2.33      30.2 +/-    2.33  0.040 / 0.040
G25     317.0          29.8                6.2 +/-    1.06      11.0 +/-    1.06  0.040 / 0.040