PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-04:27:30
G02     227.6          72.2                5.4 +/-    0.99       5.7 +/-    0.99  0.130 / 0.320
G05     173.4          11.4                0.5 +/-   17.80       1.4 +/-   17.80  0.150 / 0.290
G06     43.8           67.1                3.9 +/-    0.33       4.2 +/-    0.33  0.070 / 0.120
G12     320.7          44.1                3.8 +/-    1.21       5.1 +/-    1.21  0.040 / 0.120
G17     64.7           28.0                1.7 +/-    0.57       3.2 +/-    0.57  0.030 / 0.030
G19     50.6           42.7                2.7 +/-    1.00       3.7 +/-    1.00  0.030 / 0.040
G24     253.6          38.2                4.7 +/-    1.28       7.1 +/-    1.28  0.030 / 0.090