PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-01:28:00
G02     304.1          81.7                8.6 +/-    0.74       8.7 +/-    0.74  0.120 / 0.160
G05     166.7          26.4               15.0 +/-    1.82      28.3 +/-    1.82  0.090 / 0.190
G06     38.8           51.5                8.7 +/-    0.65      10.8 +/-    0.65  0.020 / 0.030
G12     319.1          60.0                9.7 +/-    0.87      11.0 +/-    0.87  0.030 / 0.040
G17     79.8           15.0                8.9 +/-    1.89      22.1 +/-    1.89  0.140 / 0.140
G19     67.3           31.8                8.9 +/-    2.65      15.0 +/-    2.65  0.210 / 0.130
G24     233.3          27.7               13.5 +/-    1.66      24.8 +/-    1.66  0.060 / 0.080
G25     317.4          22.7                8.3 +/-    2.43      17.2 +/-    2.43  0.060 / 0.100