PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-13:58:00
G02     231.4          68.7                5.1 +/-    0.47       5.5 +/-    0.47  0.090 / 0.090
G05     175.7          10.7               -4.8 +/-   17.30     -13.3 +/-   17.30  0.090 / 0.090
G06     42.0           61.4                4.8 +/-    0.44       5.4 +/-    0.44  0.270 / 0.470
G12     322.0          50.7                3.9 +/-    0.56       4.9 +/-    0.56  0.270 / 0.330
G17     68.6           23.0                4.5 +/-    1.50       9.2 +/-    1.50  0.030 / 0.040
G19     49.2           44.5                4.6 +/-    1.62       6.3 +/-    1.62  0.050 / 0.040
G24     245.9          36.7                6.7 +/-    1.05      10.2 +/-    1.05  0.130 / 0.240
G25     315.9          11.4               -7.2 +/-   26.78     -19.5 +/-   26.78  0.160 / 0.380