PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/01-01:57:30
G02     308.7          81.6                5.1 +/-    0.98       5.1 +/-    0.98  0.110 / 0.190
G05     166.5          27.0                9.8 +/-    3.00      18.3 +/-    3.00  0.120 / 0.160
G06     38.7           51.3                6.9 +/-    0.75       8.5 +/-    0.75  0.090 / 0.150
G12     318.8          60.7                4.7 +/-    1.26       5.3 +/-    1.26  0.110 / 0.230
G17     80.4           14.5                5.0 +/-    2.28      12.7 +/-    2.28  0.070 / 0.100
G19     67.8           31.6                6.5 +/-    3.41      11.0 +/-    3.41  0.070 / 0.080
G24     232.6          27.3                9.0 +/-    1.92      16.7 +/-    1.92  0.030 / 0.030
G25     317.4          23.5                4.7 +/-    1.88       9.5 +/-    1.88  0.030 / 0.040