PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-13:28:10
G02     224.4          65.8                7.5 +/-    0.97       8.1 +/-    0.97  0.060 / 0.080
G06     45.3           66.3                4.0 +/-    0.40       4.3 +/-    0.40  0.070 / 0.060
G12     320.3          43.8                5.8 +/-    1.56       7.9 +/-    1.56  0.060 / 0.080
G17     61.9           29.2                4.3 +/-    0.50       7.6 +/-    0.50  0.060 / 0.110
G19     48.9           42.6                6.0 +/-    1.03       8.3 +/-    1.03  0.050 / 0.060
G24     257.2          38.8                8.5 +/-    1.37      12.6 +/-    1.37  0.040 / 0.060
G28     125.6          14.4                6.6 +/-    2.40      16.7 +/-    2.40  0.050 / 0.070