PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-12:28:10
G02     218.7          64.1                8.0 +/-    0.98       8.8 +/-    0.98  0.140 / 0.320
G06     53.2           74.5                5.3 +/-    0.68       5.5 +/-    0.68  0.170 / 0.400
G12     319.4          38.1                4.1 +/-    1.03       6.2 +/-    1.03  0.030 / 0.070
G17     61.7           28.4                2.5 +/-    0.55       4.5 +/-    0.55  0.050 / 0.060
G19     45.4           45.5                3.0 +/-    0.50       4.0 +/-    0.50  0.090 / 0.070
G24     262.9          40.6                7.4 +/-    0.93      10.6 +/-    0.93  0.090 / 0.080
G28     125.3          10.3                4.0 +/-    4.28      11.2 +/-    4.28  0.040 / 0.110