PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-04:27:30
G02     42.9           46.4                3.9 +/-    1.29       5.1 +/-    1.29  0.030 / 0.040
G05     111.2          68.5                5.5 +/-    0.38       5.8 +/-    0.38  0.030 / 0.040
G06     58.1           12.2                2.0 +/-    0.92       5.3 +/-    0.92  0.040 / 0.040
G12     193.9          58.5                5.7 +/-    0.57       6.5 +/-    0.57  0.040 / 0.040
G25     275.1          59.1                4.4 +/-    0.30       5.0 +/-    0.30  0.030 / 0.020
G29     318.0          41.2                4.0 +/-    0.77       5.6 +/-    0.77  0.030 / 0.030